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Old 09-01-2002   #1 (permalink)
YodaFan1138 is offline Apprentice


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Default Fire-breathing 427 swap for ho-hum 302

Howdy Folks!

Great to be a member of another mustang site--phooey on the f-body boys who lost their brand names this year, long live the original ponycar!

Considering buying a '94 or '95 Mustang gt--love the classic pushrod/OHV design (see signature for description of one of the two loves of my life) and also is pretty much the only SN95 stang I can afford right now.

In addition, my plans include heavily modifying the 5.0 or bagging it and going for the classic 427. Considering forced induction--saw an ad in Muscle Mustangs and Fast Fords for a $6000 kit that guaranteed a 550-650hp 10 sec. streeter (ati intercooled blower, hiflo alum heads, heavy injectors, custom grind camshaft, headers, intake, Mass air meter, throttle body).

As you can see, I immediately started drooling at that hp figure--nobody in town could beat me, not even that guy who put an F-350 v10 in his SN95.... Back on the subject, I decided that rather than work with the 5.0 that would likely have upwards of 90K miles in severe need of a rebuild, I could go with a 427 motor swap (no replacement for displacement!). My question is this--I will obviously have to change the motor mounts for the new beast, but will the stock computer, electronics, etc. work still, or will replacement/upgrading be needed? Any ideas on where to get a quality 427 short block (the definition of which I believe is block, crank, conrods/bearings, pistons) as well as all the aforementioned parts for it? Does anybody deal in similar "matched" kits like I saw in MM&FF for the 427? Am I wasting my time here? Thanks a lot for your help, guys--I always feel a special connection to others who cringe at the sight of chevy bowties!
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Old 09-01-2002   #2 (permalink)
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Forgot to ask if the T-5 I will likely receive with the SN95 will bolt up to the 427. Thanks a bunch!
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Old 09-01-2002   #3 (permalink)
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do you mean a 427 FE engine like what came in some Cobra's and Galexie's or do you mean a stroked and bored 351 W? the FE will not fit well, you would be better off with a 429/460
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Old 09-01-2002   #4 (permalink)
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What does FE stand for? What was intended was not a bored/stroked motor, it was simply a standard bore, standard stroke big block that could put out some serious torque. The 429 sounds like a good route--does anybody know when FMC switched from using the AOD to the 4R70W as their standard automatic overdrive trans? I've heard that it was 1995, as this is what my 1995 F-150 Eddie Bauer has in it--wonder if the used the same on the mustang gt's. What trans code should I look for in the door jamb if this is the trans I want (better yet, does anyone know of a website that could help me decode the axle/trans code, VIN#, etc.?)

Since the 429 is now the plan, anybody know of any companies that sell head/supercharger/throttle body/air meter/camshaft, etc. packages together? (Same as questions above...)
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Old 09-02-2002   #5 (permalink)
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FE is an engine family (390/427/428). Yoda, you do not say where you are from, and local laws might not allow you to do that swap. I do not know if there is a kit for this, but it can be done (remember the 94 Boss 429?) and I would HIGHLY recomend a C6 tranny, since an AOD will not bolt up to a 429, and Ford does not have an automatic with an overdrive that can put up with the torture of a 429 that you want to build. as for EFI, the truck EFI system is not made for power, it is made for smog legality, so I would be looking at a Holley 800 CFM carb, and get the Edelbrock catalog

*edit* you will need a 9 inch rear end and some really killer suspension

Last edited by Twister; 09-02-2002 at 02:03 AM.
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Old 09-03-2002   #6 (permalink)
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Like I said before, my other toy is a '69 mach I and I have had all the carbeurator fun I can handle for a while- I was planning on building a motor with supercharged fuel injection and dropping it into an sn95, just for grins. Didn't they put 9 in rears in the 5.0 gts of 95? Also, I read that the 4R70W auto od trans can handle 769 lb-ft of torque, and a horsepower rating of about 650-700 shouldn't top that (Right??). I'll probably end up with the Tremec T-5 5 sp anyway, and I've heard those can stand up to some torture. If not, the tremec t-56 dual overdrive 6 sp may be a good choice.... And the comment about the suspension--I can handle that; urethane bushings, traction bars and sway bars are calling my name (not to mention shocks and springs).

While we're on the subject, anyone know what engine sizes will bolt to a stock automatic or manual trans from 94 or 95? SInce the ad I read was probably wrong, how much torque can I put through those same 2 trannies?

Thanks a bunch!
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Old 09-03-2002   #7 (permalink)
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Ford has not put a 9 inch in a Mustang since 1973, and the tranies that Ford makes that have the same bolt pattern as a 460 will not hold up to the punishment. the 4.6, small block, and big block have different bellhousing bolt patterns

Yoda, it will be easier for you to stroke out a 351W
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Old 09-03-2002   #8 (permalink)
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I know the 351W in my Mach I is simply a 302 block with tall heads--I assume this is the same concept used on the modern 351W? Is there anaything wrong with me using the stock block that will come with the mustang in this prcess (or will it be cheaper and more worth my time to buy a new 302 block and do the same--or can I get a straight 351 block and not have to do the head trick?) Is either of these two methods a more stable engine? Thanks for your patience.
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Old 09-03-2002   #9 (permalink)
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If you want a 427, why not go with one of the stroker kits for the 351W that increases the displacement to 427 cubic inches? You'd then have the benefit of the entire aftermarket for the windsor (302/351) motors to play with versus the limited aftermarket for the big block motors.
 
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Old 09-03-2002   #10 (permalink)
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Quote:
Originally posted by YodaFan1138
I know the 351W in my Mach I is simply a 302 block with tall heads--I assume this is the same concept used on the modern 351W? Is there anaything wrong with me using the stock block that will come with the mustang in this prcess (or will it be cheaper and more worth my time to buy a new 302 block and do the same--or can I get a straight 351 block and not have to do the head trick?) Is either of these two methods a more stable engine? Thanks for your patience.
um , that is not correct, a 351W has a taller block, with a longer cylinder
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Old 09-03-2002   #11 (permalink)
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Yoda, as good as it sounds a 427 is not your best choice, true it has tons of torque but it is heavy and inefficient. Even Shelby knew that the 302 Shelby Cobras were superior in handling and speed than the famous 427s.

My choice would be a stroker, and not even a large one. A 331 would be my choice. With the correct combination of parts you can have monster torque in a smaller and lighter package.

331 + AFR or TFS heads + Blowsilla Kenny Bell supercharger + 9 inch rear + Tremec TKO + 3.55 rear.
Engine internals forged and balanced and using a suitable block.
The above is surely a 500 + HP combination with big torque.
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Old 09-03-2002   #12 (permalink)
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Why's everyone so hung up on this 9" rear end thing? Even the S/R guys are still using 8.8" rears and they're putting over 750 hp to the rear wheels.

9" = extra weight, extra cost, extra drivetrain loss...it just isn't logical to waste your money on one for a street car.
 
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Old 09-21-2002   #13 (permalink)
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Okay, Ford built Fuel Injected 460s for 3/4 ton/ full ton trucks in the early-mid 90s, my mom's friend has one that put out nearly 400 hp (had some non-street-legal mods) when she was done with it, and put out enough torque to pull a fully loaded rodeo trailer for 2 horses. It has a 5-spd and is extremely fast (were talkin 14s in a biggie truck here, her daughter found out) I'd go for one of these. OH, and FE (as in 390, 427, 428 engines) stands for Ford/Edsel (found this in the October 2002 edition of Mustang and Fords), They have a really neat article on the 390 (It's called: 21st Century 390) and has some really good info I haven't been able to find anywhere else (including what FE stood for). The only tranny that FORD puts out that will take that kind of abuse is the C6, Chevy and Chrysler both put out some pretty stout trannies that will take it (Chrysler Torqueflite, and Chevy TH-400), but the logistics in getting a special bellhousing built and the machine work required done would leave a C6 your best choice.
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Also have a 2003 Dodge Ram (lightly modded daily driver/tow rig/office/dining room/home away from home/workshop... I call it "The Big Blue Dawg".)
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Old 09-22-2002   #14 (permalink)
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I agree with the 351W stroked to 427... you can still keep it EFI and everything... or maybe the 460 truck engine... that would be real nice... I believe Holcomb carries swap parts for that.
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